Originally Posted by DumpdEJ6
My money is on vacuum leak.
I plugged off the holes for the fast idle valve andit dropped to about 3000. I was also thinking a vacuum leak because that is the only thing that makes sense to me. I have 2 iac valves and it does the same with both of them. But I thought maybe the chipped ecu I bought on ebay may not be tuned correctly causing this issue.